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two out of three分数，相当于two thirds.
2.He says the companies that make vaccines cannot really do much when they have a virus that does not grow well.
这句话的主语和谓语是He says，后面的成分都是宾语从句。when they have a virus是时间状语从句。that does not grow well是定语从句，修饰virus。
3.Then the judges attempted to decide what the people were like.
attempt to试图，企图
例句：The offender attempted to grease the palm of the judge.
罪犯企图贿赂法官。
He attempted to mediate their differences.
他试图调停他们的分歧。